Adjustable mount for telescopic sights



vgFeb. 20, 1951 w. c. HAcKETT y ADJUSTABLE MOUNT FOR TELESCOPIC SIGHTS Filed 0c\t. l. 1948 L.) Ljjj) 2 Sheets-Sheet l JNVENTOR.

WILLIAM c.V HACKETT BYA #M4/Mem 7 tf@ ATTOQA/m @mmm www? Feb. 20, 1951 w. c. HAcKETT 2,542,513

ADJUSTABLE MOUNT FOR TELESCOPIC SIGHTS I 2 Sheets-Sheet 2 T (a l' 'Filed OCT.. l, 1948 FJ'. E-E

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WILLIAM C. HACKETT Wzmmwzfwmma Patented Feb. 20, 1951 OFFICE ADJUSTABLE MOUNT FOR 'rELEscoPIc sIGHTs William C. Hackett, Dover, Del.

Application October-"1, 1948, Serial No. 52,336

-Y (Cl. 33--50) 3 Claims.

This invention relates to firearms, and more particularly to telescopic sights for rifles.

A main object of the invention is to provide a novel and improved mount for telescopic sights which is simple in construction, easy to install and which is provided with windaand elevatio11, adjustments whereby no internfdjustments oftitelescope itself are required.

A further object of the invention is to provide an improved telescopic sight mounting structure which may be fitted on a standard rifle without the necessity of machining the riile, which may be installed or removed rapidly, which is very neat in appearance, and which is light in weight, sturdy in construction 'and affords maximum protection for the telescope tube against the possibility of damage by brush, rain,

snow, and the like.

Further objects and advantages of the invention will become apparent from the following description and claims, and from the accompanying drawings, wherein: y

Figure 1 is a side elevational view of a portion of a rie employing a telescopic sight mount constructed in accordance with the present invention.

VFigure 2 is an enlarged crosssectiona1 view taken on line 2--2 of Figure 1.

Figure 3 is an enlarged bottom plan view of the support bracket employed to support the forward end of the telescope tubein Figure 1. Figure 4 is a side elevational view of the support bracket of Figure 3.

f Figure 5 is an enlarged front elevational view o f the adjustable rear support for the telescope tube of Figure 1.

Figure '6 is a side elevational view of the rear support shown in Figure 5.

Figure 7 is a cross-sectional detail view taken on line 1-1 of Figure 5.

Figure 8 is a top plan view of the rear support shown in Figure 5.

Figure 9 is a cross-sectional detail View taken on line 9--9 of Figure 6.

Referring to the drawings, II designates a conventional rifle of the type provided with a front sight support I2 having a transverse dovetail groove I3 formed therein for engaging the dovetail fastening rib of the front sight, and a rear sight supporting block I4 formed with a vertical tapped bore adjacent one side thereof on which the Yrear sight is ordinarily adjustably mounted. 'llhe block I4 has fastened thereto an offset index 'linger I5 which is employed in conjunction with a vertical scale on the rear sight to indicate the amount of elevation of said rear .Si8ht.

It may be here noted, that although the particular design herein described and illustrated is for use in conjunction with the Lyman 48 sight, various modifications within the spirit of the invention may be made to the design to allow the rear telescope support to be employed with other popular makes of receiver peep sights having detachable sight slides.

In accordance with the present invention, means are provided for replacing the conventional front and rear sight elements of the rifle with a telescopic sight, generally designated at II in Figure 1, while employing the front sight dovetail I3 and the rear sight supporting block I4 of the rifle for mounting said telescopic sight.

As shown in Figure 1, the forward end of the telescope I'I is clamped in a sleeve member I8, said sleeve member being longitudinally slit at I9 to allow the sleeve member to be spread suiciently to receive the forward end of the telescope tube. At the margins of slit I9 are lugs 20 and 2 I, and a clamping bolt 22 passes through lug 2| and threadedly engages in lug 20, so that the forward end of the telescope tube may be firmly clamped in the sleeve member. Sleeve member I8 is bevelled at its forward end, as shown at 23, and secured to its bottom wall at said forward end is a saddle member 24 having parallel depending side ribs 25, 25 terminating in rounded abutments 26, 26. Secured beneath saddle member 24 between ribs 25, 25 is a forwardly extending leaf spring 21 which is bent downwardly at its forward portion and terminates in a nat clamping portion 28. Designated at 29 is a block member formed with a dovetail rib 30 tting the dovetail groove I3, as shown in Figure 1. Pivotally secured to the top end of block member 29 is a rearwardly extending horizontal nger 3| which is clampingly received between the bottom surface of saddle member 24 and the flat clamping portion 28 of spring 21.V The rounded abutments 26, 26 pivotally bear on the bllock member 29 on opposite sides of iinger 3 The block I4 is formed with a vertical dovetail groove 32 in which is slidably received the vertical arm 33 depending from a transverse horizontal plate member 34 extending over block I4. Designated at 35 is a vertical screw extending rotatably through plate member 34 and an apertured lug 36 secured to the lower portion of arm 33. Secured to screw 35 subadjacent lug 36 is a retaining collar 31. Screw 35 is threaded through the vertical tapped bore in block |446 Said screw is provided at its top end with a calibrated knob 38 for indicating the amount of!l elevation of plate member 34 with respect to] A\index element I may be indicated.

Plate member 34 is formed with a generally cylindrical slot 40. Rotatably mounted in the plate member and extending axially through said cylindrical slot 40 is a screw 4|, one end of the screw extending rotatably through the slot end wall, shown at 42 and being provided with a calibrated knob 43. The other end of screw 4I is rotatably received in a recess 44 formed in the opposite end wall of slot 40. Secured to screw 4I inwardly adjacent wall 42 is a collar 45 which prevents Withdrawal of the screw from plate member 34.

Designated at 46 is a cylindrical block rotatably and slidably positioned in slot 40, through which screw 4| is axially threaded. Block 46 is formed with an upstanding split ring 41. The end of ring 41 is formed with an apertured lug 48 through which passes a clamping bolt 49 which threadedly engages block 46, as shown in Figure 9, for exerting adjustable clamping force on ring 41. Secured within ring 41 is a resilient lining 50 of rubber or other suitable resilient padding material. Block 46 may be freely moved around the axis of screw 4I and may be adjusted lengthwise in slot 40 by rotating knob 43.

Designated at 52 is a screw which is threaded through a tapped vertical bore 5l formed in plate member 34. Said screw acts as an adjustable stop which engages the top of the rear receiver ring on the rifle. This screw insures that the telescope will be returned to the same position of elevation after the telescope has been removed and then replaced on the riiie.

As shown in Figure 1, the rear portion of the telescope tube I1 extends through ring member 41 and is clamped therein by means of clamping bolt 49. The elevation of the rear portion of the telescope tube is adjusted by rotating the calibrated knob 38, the bolt 52 being loosened prior to this adjustment and tightened after the adjustment has been made, The lateral adjustment of the rear portion of the telescope tube to compensate for wind Velocity is performed by rotating calibrated knob 43, whereby block 45 is moved lengthwise in the slot 40.

The bevel 23 at the forward end of sleeve mem-I ber I8 provides a streamlined effect at the forward end of the telescopic sight structure which reduces the possibility of damage to the sight from brush and the like and affords excellent protection against rain or snow. The telescopic sight structure may be rapidly mounted on and detached from any one of a variety of different models of well known rifles.

While a specific embodiment of a telescopic sight for rifles has been disclosed in the foregoing description, it will be understood that various modifications within the spirit of the invention may occur to those skilled in the art. Therefore it is intended that no limitations be placed on the invention except as dened by the scope of the appended claims.

What is claimed is:

1. In a telescopic sight for a rifle, a telescope tube, a sleeve member secured around the forward end of the tube, a block member formed at lits bottom end with a transverse dovetail rib adapted to be received in the front sight dovetail groove of a rifle, a rearwardly projecting horizontal finger on the top portion of said block member, a saddle member secured to the lower forward Wall portion of said sleeve member, said saddle member being formed with spaced longitudinal depending ribs straddling said linger and rotatably bearing on said block member on opposite sides of said iinger, and a forwardly projecting leaf spring secured to the bottom of the saddle member and clampingly engaging the under surface of said finger.

2. In a telescopic sight for a rifle, a telescope tube, a sleeve member secured around the forward end of the tube, a block member formed at its bottom end with a transverse dovetail rib adapted to be received in the front sight dovetail groove of a rifle, a rearwardly projecting horizontal finger pivotally secured to the top portion of said block member, a saddle member secured to the lower forward wall portion of said sleeve member, said saddle member being formed with spaced longitudinal depending ribs straddling said finger and rotatively bearing on said block member on opposite sides of said nger, a forwardly projecting leaf spring secured to the bottom of said saddle member and clampingly engaging the under surface of said finger, an angled member having a horizontal top portion and a vertical arm depending from one side margin of said top portion, said top portion being formed with a transversely extending cylindrical slot, a horizontal screw rotatably secured in said top portion and extending axially through said slot, a cylindrical block element positioned in said slot for rotation around the slot axis and for endwise movement in the slot, said screw being threaded axially through said cylindrical block element, and an upstanding transverse ring member receiving the rear portion of said telescope tube.

3. In a telescopic sight for a rie, a telescope tube, a sleeve member secured around the forward end of the tube, a block member formed at its bottom end with a transverse dovetail rib adapted to be received in the front sight dovetail groove of a rifle, a rearwardly projecting horizontal linger pivotally secured to the top portion of said block member, a saddle member secured to the lower forward wall portion of said sleeve member, said saddle member being formed with spaced longitudinal depending ribs straddling said finger and rotatively bearing on said block member on opposite sides of said iinger, and a forwardly projecting leaf spring secured to the bottom of the saddle member and clampingly engaging the under surface of said finger.

WILLIAM C. HACKETT.

REFERENCES CITED The following references are of record inthe file of this patent:

UNITED STATES PATENTS Number Name Date 681,202 l De Zeng Aug. 27, 1901 997,726 Windridge July 1l, 1911 1,442,952 Jones Jan. 23, 1923 1,816,195 Redeld July 28, 1931 2,125,828 Turner Aug. 2, 1938 2,178,262 Loomis Oct. 31, 1939 2,202,000 Gray May 28, 1940 2,365,976 Sorensen Dec. 26, 1944 

